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After completing th calculations below, sketch the PH curve for the titration of 30.0 mL of a 0.125M solution of a weak acid, HA(ka=1.3*10^-5) with 0.125 M KOH. indicate the pH at a) the beginning of the titration (o.o mL titrant) after the addition of: b)15.0 ml c) 29.0 ml d) 29.9 ml e) 30.0 mL f) 30.1 mL g) 35.0 mL Label the half-neutralization point and the equivalence point on the curve. Select a suitable acid-base indicator from figure 16.7 page 664 in the text ( the central science 12edition)
Calculate the molar amounts of NaOH used in the reaction with the HCI solution and with the HC2H3O2 solution?
Zn + 2HCl → ZnCl2 + H2 If 0.600 gram of zinc is used, what is the amount of zinc chloride that is produced in the above reaction?
how many milliliters of 5M MgCl2 must be added to 25ml of 0.5M MgCl2 to produce 1500mL with a final MgCl2 concentration of 1.75M?
What mass of Al (26.89 amu) is consumed when 800. kJ of heat are released by the following reaction? 2Al(s) + Fe2O3(s) -> 2Fe(s) + Al2O3(s) deltaH = -850. kJ
A sample of nitrogen gas is contained in a piston with a freely moving cylinder. At 0 C, the volume of the gas is 307 mL. To what temperature must the gas be heated
A 0.479 g sample of nitrogen, oxygen or neon gas occupies a volume of 265 mL at 157 kPa and 20?C. What is the molar mass and identity of the gas
The air in an inflated balloon (defined as the system) is warmed over a toaster and absorbs 130J of heat. As it expands, it does 76kJ of work. What is the change in internal energy for the system?
Determine the molar concentration of CH 3 COOH present in the vinegar?
A 25-g sample of an alloy at 92 degrees celsius is placed in 50 grams of water at 20 degrees celsius. If the final temperature reached by the alloy sample and water is 27 degrees celsius.
What is the pH resulting from mixing 50.0 mL of 0.0100 M H2CO3 with 1.50 mL of 0.100 M NaOH?
An ideal gas is in a cylinder with a volume of 250.0 mL at a temperature of 25 ºC and a pressure of 700 torr. The gas is expanded to a volume of 1.0 L and the temperature increased to 500 ºC.
How would the results differ if you added sodium p-toluate instead of p-toluic acid to the two-layer mixture of tert-butyl methyl ether and water
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